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Such designations can be ambiguous; for example, "CST" can mean China Standard Time (UTC+08:00), Cuba Standard Time (UTC−05:00), and (North American) Central Standard Time (UTC−06:00), and it is also a widely used variant of ACST (Australian Central Standard Time, UTC+9:30). Such designations predate both ISO 8601 and the internet era; in ...
The tz database partitions the world into regions where local clocks all show the same time. This map was made by combining version 2023d with OpenStreetMap data, using open source software. [1] This is a list of time zones from release 2025a of the tz database. [2]
It is the largest sovereign nation in the world that officially observes only one time zone. The nationwide standardized time is named Beijing Time (BJT; 北京时间; Pei-ching Shih-chien) domestically and China Standard Time (CST) internationally. [1] Daylight saving time has not been observed since 1991. [2]
UTC−08:00 – Pacific Time zone: the Pacific coast states, the Idaho Panhandle and most of Nevada and Oregon UTC−07:00 – Mountain Time zone: most of Idaho, part of Oregon, and the Mountain states plus western parts of some adjacent states UTC−06:00 – Central Time zone: a large area spanning from the Gulf Coast to the Great Lakes
The first time zone plan was proposed by the Central Observatory (now Beijing Ancient Observatory) of the Beiyang government in Peking in 1918. The proposal divided the country into five time zones : Kunlun ( UTC+05:30 ), Sinkiang-Tibet ( UTC+06:00 ), Kansu-Szechwan ( UTC+07:00 ), Changhua ( UTC+08:00 ) and Chinghai ( UTC+08:30 ).
The purpose of the "principal cities" list at the top of some of the time zone entries is to give a brief list of major cities. These should be limited to a maximum of one city per country (within each zone), and not all countries in a zone need to have a city listed.
UTC+08:00 is an identifier for a time offset from UTC of +08:00.. With an estimated population of 1.708 billion living within the time zone, roughly 21% of the world population, it is the most populous time zone in the world, as well as a possible candidate for ASEAN Common Time.
1 Time zones. 2 Government and politics. 3 Health and medicine. 4 Science and technology. ... Central Standard Time, North America: UTC−06:00; China Standard Time ...